Pollen Count
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Pollen Count in Coimbra

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In Coimbra, Portugal, pollen seasons happen every year. There are four pollen seasons: tree, grass, weed, and olive.

Updated: 2/22/2026

Tree pollen season starts in January and ends in April. During this time, trees like birch, oak, and hazelnut release pollen. This pollen is carried by the wind and spreads everywhere.

Grass pollen season begins in May and lasts until July. Many types of grasses release pollen during this time. It's a bad time for people who react to grass pollen.

Weed and olive pollen seasons happen in the summer and fall. Weeds like nettle and sorrel release pollen, and olive trees do too. This pollen can cause trouble for people who react to it.

Pollen Forecast Chart

Recommendations

When pollen concentrations reach a peak, we suggest these simple steps to help with hay fever. These tips are extra important on windy days when plants are in peak anthesis (the time when they release the most pollen).

Annual Pollen Overview

Check out this month-by-month overview of the daily average pollen count in Coimbra 🌾. This data is based on previous years and serves as a guideline to help you understand when different pollen seasons typically occur in your city.

  Alder Birch Grass Mugwort Olive Ragweed
Jan 1.1 0 0 0 0 0
Feb 5.2 0 1.9 0 0 0
Mar 2.6 90.1 18.2 0 0 0
Apr 0.6 19.3 106.3 0 250.6 0
May 0 1.9 431.8 0 668.1 0
Jun 0 0 297.7 0 19.6 0
Jul 0 0 148.6 0 0.5 0
Aug 0 0 46.1 0.8 0 0
Sep 0 0 7.8 0.3 0 0
Oct 0 0 2.5 0 0 0
Nov 0 0 0.1 0.1 0 0
Dec 0 0 0 0 0 0

Nearby Places

Disclaimer * The pollen count information provided for Coimbra is for educational purposes only, sourced from the CAMS European air quality database. We cannot guarantee its accuracy or reliability. This information is not a substitute for professional medical advice. Consult a qualified healthcare provider for medical concerns. We are not medical professionals.
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